id:A125272 - OEIS Search Results

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Primes p such that 3p -/+ 2 are primes.

+0
13

3, 5, 7, 13, 23, 37, 43, 103, 127, 163, 167, 257, 293, 313, 337, 433, 523, 757, 797, 887, 953, 1013, 1063, 1153, 1283, 1303, 1307, 1483, 1597, 1657, 1667, 1693, 1723, 1783, 1913, 2003, 2333, 2347, 2557, 2897, 2927, 3067, 3533, 3823, 3943, 4003, 4013, 4093 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n)= A125215(n)/3`
	MATHEMATICA	`lst={}; Do[p=Prime[n]; If[PrimeQ[3p-2]&&PrimeQ[3p+2], AppendTo[lst, p]], {n, 7!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 18 2009]`
	CROSSREFS	`Intersection of A023208 and A088878.` `Cf. A125215.` `Sequence in context: A107664 A085013 A164939 this_sequence A127443 A003229 A077949` `Adjacent sequences: A125269 A125270 A125271 this_sequence A125273 A125274 A125275`
	KEYWORD	`nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)gmail.com), Nov 26 2006`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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